Grade 23

Datasheet
ASTM Grade (UNS No.)GRADE 23 (R56407)
Chemical Composition (Max. values unless range is shown)(wt. %)0.08C; 0.03N; 0.13O; 0.25Fe; 5.5-6.5Al; 3.5-4.5V; 0.0125H
TENSILE PROPERTIESGuar.R.T. Min*.Guar.R.T. Min**.Typical Elevated Temperature Properties
93˚C (200˚F)149°C(300°F)204°C(400°F)260°C(500°F)
Ultimate StrengthMPa (ksi)862 (125)827 (120)833 (121)770 (112)723 (105)678 (98)
Yield Strength, 0.2% offsetMPa (ksi)793 (115)759 (110)712 (103)640 (93)587 (85)532 (77)
Elongation in 51 mm (2″) gage length(%)10[7.5(6.0)]****13151616
Reduction in Area – Bar, Billet & Forging only(%)2515
OTHER MECHANICAL PROPERTIES* Extra low interstitials
** Per ASTM F136 specification
*** Per ASTM “B” product specifications
**** Transformed-beta condition
Stress to Rupture in Time ShownStressMPa (ksi)
Time-Hrs. at Temp. (˚C)
Stress &Time to Produce Elongation Shown (creep)StressMPa (ksi)
Time-Hrs. at Temp. (˚C)
Creep(%)
Charpy V-Notch Impact @ R.T.Joules (ft-lbs)24- 40 (18 – 30)
Bend RadiusUnder 1.78 mm (0.070″) thick4.5 x Thickness
1.78 mm (0.070″) and over5.0 x Thickness
Welded Bend Radius6 – 10 x Thickness
Nominal Hardness32 HRC
PHYSICAL PROPERTIES
Nominal Beta Transus°C (°F)982 (1800)
Coefficient of Thermal Expansion 10-6/˚C (10-6/˚F)0-100˚C (32 -212˚F)9.2 (5.1)
0-315˚C (32-600˚F)9.5 (5.3)
0-538˚C (32-1000˚F)10.1 (5.6)
0-648˚C (32-1200˚F)10.4 (5.8)
0-816˚C (32-1500˚F)10.8 (6.0)
Densityg/cm3 (lbs/in3)4.43 (0.160)
Melting Point, Approx.°C (°F)1650 (3000)
Electrical Resistivity @ R.T.10-6 ohm•cm (10-6 ohm•in)165 (65)
Modulus of Elasticity – TensionGPa (103 ksi)114 (16.5)
Modulus of Elasticity – TorsionGPa (103 ksi)42.8 (6.2)
Thermal ConductivityW/m•˚C (BTU/hr•ft•˚F)7.3 (4.2)
Specific HeatJ/Kg•˚C (BTU/lb•˚F)565 (0.135)
WeldabilityVery Good
Industry SpecificationsASTM – B265, B348, B363, B381, B861, B862 and F136; AMS – 4907, 4930 and 4956